Cultivator.



F. L. DEWEY.

CULTIVATOR.

APPLICATION FILED MAYIZ. I915.

Patented Nov. 23, 1915.

4 SHEETSSHEET 1- F. L. DEWEY.

CULTIVATOR.

APPLICATION FILED MAY 1 2, i915. 1,161.,1 14. Patented Nov. 23, 1915.

4 SHEETSSHET 2.

F. L. DEWEY.

CULTIVATOR. APPLICATION FILED MAYIZ, 1915.

1, 1 61 1 14;, Patented Nov. 23, 1915.

4 SHEETSSHEET 3.

F. L. DEWEY.

CULTIVATOR.

APPLICATION FILED MAY I2. I915.

1 1 61 ,1 14;. Patented Nov. 23, 1915.

4 SHEETS-SHEET 4.

PH c0.. WASHINGTON D c UiriEd PEIW @iihitihi.

FEEDERIO' L. DEWEY, 0F CANTON, ILLINOIS, ASSIGNOR TO PARLIN & GRENDQR-FF COMPANY, OF CANTON, ILLIIIC'IS, A QGRPUR-ATION OF ILLINOIS.

CULTIVATOR.

anemia.

Application filed May 12, 1915.

erence being had to the accompanying draw:

ings.

My invention relates to cultivator-s and it has for its prlnclpal ob ect the provision of new and improved means for regulating the depth at which the ground stirring appliance shall work.

It is one of the objects of my invention to provide suitable regulating means controlling the position of the gangs without the use of hand levers standing up in the way of the driver and interfering with his handling of the team and the plow;

It is another object of my invention to provide a construction and arrangement of spring devices which shall serve to assist in the raising of the gangs and also to cushion the gangs so as to cause them to work normally at a predetermined depth, but soarranged that the are capable of being moved downward by the operator to follow inequalities of the ground or to effect deeper pl wing as desired.

It is another object of my invention to provide in connection with this improved spring construction means for shifting the supporting wheels backward when the gangs are raised out of operative ground-engaging position so as to maintain the proper balance of the machine as a whole.

The preferred means by which I have accomplished my several objects are illustrated in the accompanying drawings and are hereinafter specifically described.

That which I believe to be new and desire to cover by this application is set forth in the claims.

In the drawings :-Figure 1 is a side elevation of my improved. machine, with one of the supporting wheels removed; Fin. 2 is a similar view but showing the position which the parts assume when the gangs are held in raised position; Fig. 3 is a top view of the parts as shown in Fig. 1, but with both supporting wheels in position upon the plow; F 4 is a fragmentary view, being an enlarged detail showing the construction Specification of Letters Patent.

iatented Nov. 233, i915.

and arrangei'nent of the parts by which the lower end of the springs utilized for controlling the position of the gangs 18 connectcd with the gangs; Fig. 5 is a side view of one of the arm members shown in F 1g.

4; and Fig. 6 is a fragmentary view, being an enlarged detail showing the part to which the upper end of the spring is connected, being shown substantially as seen at the line 66 of Fig. 1.

Referring to the several figures of the drawings in which corresponding parts are indicated by the same reference characters,15 indicates a laterally-extending sleeve having mounted in its ends the upper horizontal portions of axle members 16- 17. upon the lower horizontal portions of which are journaled supporting wheels 18 19, respectively. Hounds 2021 are connected in any suitable manner at their forward ends to a tongue 92 and at their rear ends are connected by means of brackcts 232 i to the transversely-extending sleeve 15. an arch 25 is connected in any suitable manner to the rear end of the tongue, the hounds 20-21 being connected to the vertically-extending portions of the said arch 25 by means of suitable clips 2G27. Upon the lower horizontally-extending portions of the arch member 25 are revolubly mounted sleeves 2S29 to which the plow beams are adjustably connected. Each comprises beams 30 carrying ground-working appliances 31 and provided with a handle 39. and a stirrup 33 for the convenience of the operator. The gangs are connected to the sleeves 28 by means of yokcs 3 which are, by'means of vertically extending pins or bolts 35, pivotally connected with sleeves 36 which are feathered upon the sleeves 28-29 and are adapted to be held by means of. set-screws in any desired ad usted posit on along such sleeves; The framework is further supported by means of diagonally-extending seat supporting bars 3839 which are connected at their forward ends to the hounds 2021 and'to the sleeves 15, being and by which the said arch 25 is connected The upper horizontal portion of to the wheel arch comprising the sleeve and the axle members 16-17. The connection between the said two arches is effected by means of adjustable diagonally-disposed links 42-which are pivotally connected at their lower ends to the lower ends of the arms 411, and whichare pivotally connected at their rearward upper ends to clips as fixed upon the vertically-extending portions of the axle members 16-17,. Each of the clips 13 is also provided with an inwardlyextending hook member lel over which the against turning relative to the framework of the'machine by means of diagonally-extending bars 1 9 which have their lower ends pivotally mounted upon the horizontallyextending portions of the said arch 25 adjacent to the outer ends of the sleeves 28 29, said bars 49 being connected at their upper ends by means of bolts 50 with the brackets 23. -2 l-, respectively. As is best shown in Fig. 6, the bolts 50 also pivotally support rock-arms 51, short brace-bars 52being provided for bracing the bolts 50 relatire to the bars 49; The lower end of the rock-arm 51 at each side of the machine is connected by means o1 a coiled expansion spring 53 with the arm 4-1 at that side of the machine, the connection between the spring and the arm 4T1 being effected by means of a link 54. i The rock-arm51 is provided with a lug 55 extending from its forward face adapted to engage the brace-bar 52, as is best shown in Fig. 6, to limit the turning of the arm 51 in counterclockwise direction in Figs. 1 and 2. Each ofthe springs 53 is thus adaptedto I exert a backward pull u on the arm l1 with which it is connected. 7

ltevolubly mounted upon the outer end of the, horizontally-extending portion of the arch 25 at each side of the machine is an arm 56 which is provided with a laterally-e21 hand wheel 60- secured by means of screw-' threads upon its upper end. Thus through the use of the hand wheel 60 upon the rods 59 the vertical position of the arms 56 can be easily and readily controlled by the operator in position in his seat.

With the gangs in raised position, as shown in Fig. 2, the lugs 55 carried by the rock-arms 51 will be in contact with'the brace-bars52. The lugs 58 carried by the j arms ll will have been turned upward out of contact with the lugs 57 carried by the arms 56. Upon the lowering of the angs, and the forward movement of the arms 41, the

the gangs by the operator. Upon such fur- V tlier downward movement of the gangs after the. stop-lugs 58 have come in contact with the lugs 57, the arms 56 will be swung down ward, causing the rock-arms 51 to be swung in clock-wise direction in Figs. 1 and 2. Thus upon a movement of the gangs'downward after the lugs 58 have come in contact with the lugs 57, the lower ends. of the springs 53 are moved downward and at the same time the upper ends of the said springs are moved upward, the eifect of the springs 53 to resist the downward movement of the gangs being thus twice as great after the engagement of the lugs 58 and 57 as that before such engagement of the said lugs. The efiective strength of the spring 53 and the proportions of the several parts are designed to be such that the gangs will normally work at substantially the depth at which the lugs58 and 57 are first brought into contact in the downward movement of the gangs, inwhich position the lugs 55 are still in engagement withthe'brace-bars 52. With the parts constructed and arranged in this manner, it will be readily understood that the position at which the gangs normally work can be easily and quickly regulated by a proper adjustment of the hand wheels 60 upon the rods 59, by which adjustment the normal position of the lugs 57 is regulated.- Y As will be readily appreciated from an inspection of Figs. 1 and 2, when the-gangs are raised the supporting wheels are moved backward relative to. the frame through the medium of the bars 42. The tendency of the wheels to lag behind in the forward movement of the machine is thus utilized to assist in the raising otthe gangs. Inasmuch as the shifting o1 the wheels backward also lowers the frame slightly, it will be seen that theweight of the frame and of the driver also assist slightly in the gang-raising operation..' The backward movement of'the' wheels compensates for the added weight of yielding means tending to hold said firstnamed arm in raised position relative to said rock-arm.

2. In a cultivator, the combination ofa frame, ground working appliances swingingly mounted relative to said frame, an arm adapted to swing with said ground working appliances, a second arm pivotally mounted relative to said first-named arm and adapted to be engaged thereby, means for adjusting the position at which said sec.-

ond arm shall stand and at which. it shall be engaged by said first-named arm, a spring adapted to resist the downward swinging of said ground working appliances, and means actuated by the movement of the second arm with said first-named arm for additionally stressing said spring as said ground working appliances move downward after the engagement of said two arms.

3. In a cultivator, the combination of a frame, ground working appliances swingingly mounted relative to said frame, an arm adapted to swing with said ground working appliances, a second arm pivotally mounted relative to said first-named arm and adapted to be engaged thereby, means for adjusting the position at which said sec ond arm shall stand and at which it shall be engaged by said firstnamed arm, a coiled expansion spring adapted to have its lower end moved downward by the downward movement of the ground working appliances, and means actuated by the movement of said second arm with said first-named arm for moving the upper end of said spring upward as said ground working appliances move downward after the engagement of said two arms.

4. In a cultivator, the combination'of a frame, ground working appliances swingingly mounted relative to said frame, an arm adapted to swing with said ground working appliances, a second arm pivotally mounted relative to said first-named arm and adapted to be engaged thereby, a rockarm pivotally mounted on said frame, a spring connected at its upper end to one end of said rockarm and at its other end to said first-named arm, and connections between the other end of said rock-arm and said second-named arm. I a

5. In a cultivator, the combination of a frame, ground working appliances swingingly mounted relative to said frame, an arm adapted to swing with said ground working appliances, a second arm pivotally mounted relative to said first-named arm and adapted to be engaged thereby, a roclcarm pivotally mounted on said frame, a spring connected at its upper end to one end of said rock-arm and at its otherend to said first-named arm, a stop adapted to limit the turning of the rock-arm under the influence of the said spring, and connections between the other end of said rock-arm and said second-named arm.

6. In a cultivator, the combination of a frame, ground working appliances swingingly mounted relative to said frame, an arm adapted to swing with said ground working appliances,a second arm pivotally mounted relative to said first-named arm and adapted to be engaged thereby, a rockarm pivotally mounted on said frame, a spring connected at its upper end to one end of said rock-arm and at its other end to said first-named arm, and adjustable connections between the other end of said rock-arm and said second-named arm.

7. In a cultivator, the combination of a frame, ground working appliances swing ingly mounted relative to said frame, an arm adapted to swing with said ground working appliances, a second arm pivotally mounted relative to said first-named arm and adapted to be engaged thereby, a rock-arm pivotally mounted on said frame, a spring connected at its upper end to one end of said rock-arm and at its other end to said first-named arm, I

independently of the turning of said rockarm, and connections between said rock-arm and said ground working appliancesefl'ective at a predetermined point in the downward movement of the ground working ap: pliances for swinging said rock-arm for additionally stressing said yielding means. 7

9. In a cultivator, the combination of a frame, ground working appliances movable .up and down relative to said frame, a rockarm pivotally mounted relative to said frame,,yielding means bearing on said rock:

arm adapted to be stressed by the downward movement of the round workin a 3 liances independentlyof the turning of said rockarm, and adjustable connections between said rock-arm and said ground working appliances effective at the desired point in the downward movement of the ground working appliances for swinging said rock-arm for additionally stressing said yielding means.

10. In a cultivator, the combination of a frame, ground working appliances movable up and down relative to said frame, a rockarm pivotally mounted relative to said frame, yielding means bearing on said rockarm adapted to be stressed by the downward movement of the ground working appliances independently of the turning of said rockarm, a rod passing through the said rockarm, means on theupper end of said rod within convenient reach of the-operator for adjusting the position of the rod relative to said rock-arm, and means actuated by the downward movement of the ground working appliances for moving said rod downward 'for additionally stressing said yielding arm, a rod passing .throughthe said rockarm, means on the upper end of said rod; within convenient reach of the operator for adjusting the position of the rod relative to said rock-arm, a stop device operatively connected with said rod, and a cooperating stop device moved downward by the downward movement of the ground working appliances adapted to be brought into engagement with said first-named stop device at some point in the downward movement of the ground working appliances depending upon the adjustment'of the said rod, the further down ward movement of the ground working appliances after the engagement of said two cooperating, stop devices being adapted to swmg saidrock-arm for additionally stressing said yielding means.

12. In a cultivator, the combination of a frame, ground working appliancesmovable up and down relative to said frame, an arm pivotally mounted relative to said frame, connections between said arm and said ground working appliances whereby said arm is swung relative to the frame as the ground working appliances are moved up and'down, a second arm pivotally mounted relative to said first-named arm and adapted to be engaged thereby, a rock-armpivotally mounted on said frame, and yielding means having bearings on one end of said rockarm and on said first-named arm tending to hold said parts yieldingly against movement away from each other.

13. In a cultivator, the combination of a frame, ground working appliances movable up and down relative to said frame, an arm pivotally .mounted relative to said frame, connections between said arm and said ground working appliances whereby said arm is swung relative to theframe as the ground working appliances are moved up and down, a second arm pivotally mounted relative to said first-named arm and adapted to be engaged thereby, a rock-arm'pivotally mounted on said frame, yielding means having bearings on one end of said rock-arm and on said first-named arm tending to hold said parts yieldingly against movement away from each other, and connections be tween the other end of said rock-arm and said second-named arm.

14. In a cultivator, the combination of a frame, ground working appliances movable up and down relative to said frame, an arm pivotally mounted relative to said frame, connections between said arm and said ground working appliances whereby said arm is swungrelative to the frame as the ground workingappliances are moved up and down, a secondarm pivotally mounted;

relative to said first-named arm, lugs carried by said arms adapted to be brought into engagement with each other in the swinging of said arms, yielding'means tending to prevent the swinging of the first named armnpon the downward movement of the ground workingappliances, and

means actuated by the movement of said second arm after the said'lugs are brought lnto engagement with'each other for additionally stressing said yielding means upon the fur ther downward movement of the ground working appliances.

15. In a cultivator, the combination of a frame, ground workmg appliances movable up and down relative to said frame, an arm pivotally mounted relative to said frame, cumections between said arm and said ground working appliances whereby said arm is swung relative to the frame as the ground working appliances are moved up and down, a second arm pivotally mounted relative to said first-named arm, lugs car ried by said arms adapted to be brought into engagement with each other in the'swinging of said arms, yielding means tending to prevent the swinging of the first-named arm upon the downward movement of the ground workmg appliances, means actuated by the movement of said second arm after the said,

lugs are brought into engagement with each movement of' the ground 'working appli ances, and adjustable means for regulating i the position at which said lugs shall be brought into operative engagement wit; each other. I Y Y 16. In a cultivator, the combination of a frame, ground working appliances movable up and down relative to said frame, an arm pivotally mounted relative to said frame, connections between said arm and said ground working appliances whereby said arm is swung relative to the frame as the ground working appliances are moved up and down, a second arm pivotally mounted relative to said first-named arm, lugs carried by said arms adapted to be brought into engagement with each other in the swinging of said arms, yielding means having bearings one of which is adapted to be moved for stressing the said yielding means upon the downward movement of the ground working appliances, and means actuated by the movement of said second arm after the said lugs are brought into engagement with each other for moving the other of said bearings for additionally stressing said yielding means.

17. in a cultivator, the combination of a frame, ground working appliances movable up and down relative to said frame, an arm pivotally mounted relative to said frame, connections between said arm and said ground working appliances whereby said arm is swung relative to the frame as the ground working appliances are moved up and down, a second arm pivotally mounted relative to said first-named arm, lugs carried by said arms adapted to be brought into engagement with each other in the swinging of said arms, yielding means having bearings one of which is adapted to be moved for stressing the said yielding means upon movement of said second arm after the said lugs are brought into engagement with each other for moving the other of said bearings for additionally stressing said yielding means, and adjustable means for regulating the position at which said lugs shall be brought into operative engagement with each other.

18. In a cultivator, the combination of a frame, ground working appliances movable up and down relative to said frame, an arm pivotally mounted relative to said frame, connections between said arm and said ground working appliances whereby said arm is swung relative to the frame as the ground working appliances are moved up and down, a second arm pivotally mounted on the axis of said first-named arm, a lug carried by said first-named arm extending over said second-named arm and adapted to engage the same upon the downward movement of said first-named arm, yielding means having bearings one of which is adapted to be moved for stressing said yielding means upon the downward move ment of the ground working appliances, adjustable means for regulating the position at which said second arm shall stand normally, and means actuated by the movement of said second arm when moved downward by said first-named arm for moving the other of the bearings of said yielding means for additionally stressing said yielding means.

FREDERIC L. DEWEY.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents,

Washington, D. C. 

